Product Overview
The PD100PS02SRS5ARM0T00C is a Parker Hannifin P1/PD series medium-pressure axial piston variable displacement pump from the PD sub-series (Industrial), with a nominal displacement of 100 cm³/rev, designed for open-circuit hydraulic systems with continuous operating pressure up to 280 bar. The series features a swashplate-type variable design with cam bearing architecture and hydrostatically balanced saddle bearings, delivering a compact installation envelope and high power density.
The full order code PD100PS02SRS5ARM0T00C decodes as follows: PD100 indicates the PD series 100 cm³/rev size; PS02 is the pump configuration code; SR specifies right-hand rotation (clockwise, viewed from shaft end); S5A is the control type code (within Parker’s control option coding system, S5A corresponds to pressure compensator configuration — confirm exact control function against Parker’s official ordering code table); RM specifies shaft and mounting configuration; T00 indicates no torque limiter option; C denotes industrial configuration. The PD series is the low-noise variant for industrial markets, sharing its core platform with the P1 series (high-speed mobile variant).
Manufactured to exact Parker P1/PD platform specifications, this pump delivers true drop-in interchangeability — identical mounting flange (SAE-C 4-bolt, per SAE J744), shaft specification (SAE C-C keyed shaft), port connections (SAE Code 61 flanges), and displacement rating. Every unit undergoes 100% simulated operating condition testing before shipment.
Technical Specifications
The following specifications are based on Parker’s official P1/PD series catalog (HY28-2665-01) and Parker’s official e-commerce platform technical data. Individual parameters — such as complete pump weight — should be confirmed against the official Parker technical manual or factory calibration data.
Model: PD100PS02SRS5ARM0T00C
Manufacturer: Parker Hannifin
Series: P1/PD series, PD sub-series (Industrial)
Design: Swashplate-type axial piston variable displacement pump, open-circuit
Maximum Displacement: 100 cm³/rev (6.01 in³/rev)
Rated Continuous Working Pressure: 280 bar (4060 psi)
Intermittent Working Pressure: 320 bar (4640 psi)
Peak Pressure: 350 bar (5075 psi)
Minimum Speed: 600 rpm
PD Series Maximum Speed (1.0 bar abs inlet): 1800 rpm
Rotation Direction: Right hand (clockwise, viewed from shaft end)
Control Type: S5A control configuration (pressure compensator/variable control — confirm against Parker ordering code table)
Mounting Flange: SAE-C 4-bolt flange (per SAE J744)
Shaft Specification: SAE C-C keyed shaft
Port Connections: Inlet 2-1/2″ Code 61 flange / Outlet 1-1/4″ Code 61 flange
Case Drain Ports: 3 × SAE-12 threaded ports (D1 / D2 / D3), supporting multiple mounting orientations
Theoretical Flow at 1800 rpm (Vgmax): Approx. 180 L/min (47.55 GPM)
Housing Material: Cast iron
Seal Material: Fluorocarbon
Fluid Viscosity Range: 7–160 cSt (optimum 14–50 cSt)
Rated Fluid Contamination (ISO): 20/18/14
Ambient Temperature: -40°C to +95°C
Weight (End Port Configuration, Reference): Approx. 51–53 kg (112–117 lb)
Key Technical Advantages
1. Cam Bearing Design and Long-Life Bearing System
The P1/PD series employs a cam bearing design in which swashplate motion is supported by rolling bearings rather than sliding friction, significantly reducing friction losses and wear rates. The pump incorporates long-life tapered roller shaft bearings capable of handling high axial and radial loads. The saddle bearings use a hydrostatically balanced design that forms a stable oil film under high-pressure conditions, reducing friction pair wear and extending overall pump service life.
2. Fast-Response Pressure Compensator and Energy-Saving Operation
The pump is equipped with pressure compensator control — when system pressure reaches the set value, the swashplate rapidly de-strokes, automatically reducing displacement to minimum and maintaining only the flow required to sustain system pressure. Compensator response is fast and stable, effectively minimizing wasted power and oil temperature rise. In injection molding holding phases and press pressure-maintenance cycles, this characteristic significantly reduces energy consumption and cooling demand.
3. Elastomer Seals and Leak-Free Design
All sealing interfaces use elastomer seals instead of traditional gaskets, eliminating external leakage paths. The housing is constructed from high-strength cast iron with corrosion-resistant treatment for long-term industrial operation. Fluorocarbon seals resist high temperatures and hydraulic fluid corrosion, suitable for ambient temperatures from -40°C to +95°C.
4. Modular Controls and Full Power Through-Drive
The P1/PD series modular control design allows the same pump body to accommodate multiple control types (pressure compensator, load sensing, torque limiter, etc.), enabling simple field conversion. The pump features full power through-drive capability, allowing a second pump to be driven in series via a through-drive coupling shaft for multi-pump system integration.
5. Low Noise and Low Flow Ripple
The PD series was developed specifically for industrial markets, featuring low-noise design and low flow ripple to further reduce system noise levels. The compact pump body and small installation envelope suit space-constrained industrial hydraulic power unit applications.
Application Areas
Injection Molding Machines and Presses: Hydraulic power systems for plastic injection molding machines and hydraulic presses, with pressure compensator control suited to holding-phase duty
Machine Tools and Industrial Hydraulic Power Units: Hydraulic systems for various machine tools and industrial power units
Material Handling Equipment: Forklift and stacker hydraulic systems
Metal Forming Equipment: Press brake and stamping machine hydraulic power units
Mining and Metallurgical Equipment: Mining machinery and continuous casting equipment hydraulic systems
Agricultural Machinery: Tractor hydraulic hitch and implement drive systems
Expert Maintenance Tips
1. Case Drain Line Requirements
The PD100 pump body is equipped with three SAE-12 case drain ports (D1 / D2 / D3). Connect the highest-position port to the return line and plug the remaining ports. The case drain line must return to the reservoir independently — backpressure must not exceed 2 bar (continuous) / 4 bar (intermittent). The drain line terminus should sit below the reservoir oil level to prevent air ingestion.
2. Mandatory Case Pre-Fill and Air Purging at First Installation
After installation, fill through the highest case port with clean hydraulic fluid filtered to ≤10 μm until oil overflows. Open the bleed plug and run the pump at idle until bubble-free oil flows continuously. Do not apply load until the system is confirmed air-free. Dry starting will cause catastrophic wear to the saddle bearing and swashplate friction pair within seconds.
3. Fluid Cleanliness and Viscosity Control
The P1/PD series requires fluid cleanliness at ISO 20/18/14 or better (NAS 9 or better recommended). Optimum operating viscosity is 14–50 cSt, with an allowable range of 7–160 cSt. Install a 10 μm nominal filtration element in the suction line; replace after the first 200 hours, then inspect or replace every 500 hours.
4. Pressure Compensator Calibration and Verification
The pressure compensator setting directly affects system pressure and pump displacement response. After pump or control module replacement, verify the compensator crack pressure-to-displacement relationship at rated speed and 50% displacement, confirming it falls within the factory calibration range. The compensator adjustment range is 15–350 bar (approximately 125 bar/turn); never exceed the system maximum pressure setting.
5. Periodic Shaft Seal and Bearing Inspection
The pump employs a single shaft seal configuration. Inspect for oil seepage at the shaft end every 2000 hours. The long-life tapered roller bearings offer extended service life under normal operating conditions, but under high-pressure continuous duty or contaminated fluid conditions, periodically assess bearing clearance. Removed bearings require professional instruments for clearance measurement; visually inspect roller surfaces for scoring or discoloration.
